"She has really become an important fashion icon," she told Vogue.com.

"She has a unique and bold sense of style that really works for her. I love the way she pairs unexpected items together and always manages to make them look great. She looks beautiful and demure in our floral cut-out dress."

Rebecca is also renowned for dressing the stars of Sex and the City and Gossip Girl. The designer loves seeing stars embrace her designs while never losing sight of their own signature style.